Graphophone-stop.



J. W. JONES. GRAPHOPHONE STOP. APPLICATION FILED APR. 8, 1908.

901,910. Patented 001;. 20, 1908.

UNITED STATES PATENT OFFICE JUNIUS WALLACE JONES, OF BATON ROUGE,LOUISIANA.

GRAPHOPHONE-STOP.

Specification of Letters Patent.

Patented Oct. 2c, 1908.

Application filed April 8. 1908. Serial No. 425,890.

I plates of;difl'erer-.t diameters.

My iuvention is designed to coact with a form of trip stop device now inuse on what is-known as the Victor machine.

It is my ob'ect to produce an automatic stop which will require theaddition of the fewest number of parts and which will be simple inconstruction. and effective in operation.

The invention consists in-the features and combination and arrangementof parts hereinafter described and particularly pointed out in theclaims.

In, the drawings, Figure 1 is a side view of a turn table of ordinaryconstruction to receive the record disk, said turn table ,haviegassociated therewith the horn, the trip stop of substantially ordinaryform and my improvements Fig. 2 is a detail plan view of the ordinarytrip stop in its relation to the turn table. Fig. 3 is a plan view of apart of my invention with the elements in one position, and Fig. 4 is asimilar view to Fig. 3 with the parts in. another position. a plan viewof a record of disk form showing the grooves which are made on. allrecords.

In these drawings, 1 indicates a part of the casing or frame, 2 the turntable, 3 the needle point or stylus which is carried at the end of thearm 4 which supports the ordinary horn. At 5 I show generally a tripstop deyice some what like that used to-day, carried by a bracket 6which is clamped to the edge of the table by a set screw 7. This tripdevice has a lever or arm 7 projecting therefrom, which in ordinarypractice may be manipulated by hard to trip the stop so that it willcontact with the periphery of the turntable ard thus stop the rotationof the same. With my improvement however, I design. to operate thissubstantially ordinary form of trip stop lever automatically and forthis purpose I employ an arm 8 attached by a clip 9 to the arm 4 of thehorn, said arm 8 being of right angular form with its horizontal portion9 Fig. 5 is extending inwardly so that it will describe a path as thehorn swings laterally of such diameter as will cause it to contact withthe arm 7 of the ordinary trip stop device, and

when this contact occurs the trip stop is automatically operated to bearupon the periphery of the table 2 and arrest the movement of the same. V

The laterally swinging movement of the arm 4 is due, as in ordinarypractice, to the action of the needle point traversing the groove of therecord. he arm 9 is arranged to strike the trip. arm, 7 when the needlereaches the outer edge of the seal of the record. This is accomplishedby making a groove Y extending from the point where the record or musicgrooves stop at the circle X, to the seal Z Fig. 5. The radii of theseals oi ten and of eight inch records vary,'fand in order to meet thiscondition I provide an ad justment in my automatic attachement to suitthe size of the record. For this purpose I provide a spring arm 10attached to the side of the arm 9 and adapted to be set in either one oftwo positions as shown in Figs. 3 and 4 by a pivoted finger piece 11.This finger iece is pivoted at 12 to the arm 9 so that w on thrown intothe position shown in Fig. ,3 it will move the spring 10away from thearm 9, whereas, if it is placed in the position shown in Fig. 4 it willallow the spring or arm 10 to assume a position close to the side edgeof the arm 9. In other words, I provide by this means, in effect, an armcapable of being narrowed or widened to contact later or earlier withthe trip arm 7 according to the diameter of the record plate. When thefinger piece 11 is in the posltion of Fig. 4 it allows the needle 3 toreach the seal before the arm 9, or more accurately speaking, the member10 carried thereby comes in contact with the lever 7 of the trippingdevice, thus stopping the apparatus for eight inch record. When,however, the finger piece 11 is in the position shown in Fig. 3, the arm9 strikes the trip arm 7 before the needle 3 arrives within the seal often inch records, thus stopping the machine for ten and twelve inchrecords.

In Fig. 2 I show the lever arm 7 in two different positions, one beingin dotted lines. When it is in the position M, the turntable rotates andwhen it is ressed so that it jumps to the position N t e turntablestops.

All that the operator is required to do after moving the arm 7 to theposition M Fig. 2 to start the graphophone is to set the finger piece 11to the position shown in Fig.8, for stopping ten or twelve inch recordsor to set the finger piece in the position shown in Fig. 4 for stoppingeight inch records.

In the foregoing description I have referred to the trip stop device assimilar to that used on the Vlctor machine. Specifically, however, mydevice differs from that used on the Victor machine in that it is set toa hair trigger while that on the Victor machine is not, and mycontrolling lever works in the reverse direction from that on the Victormachine. My device may be used on the Victor or any other machine.

The supporting arm 8, instead of being of the right angular form shown,may be of any other desired shape.

I claim as my invention:

1. In combination with the trip stop device, an arm attached to the armof the horn to contact with the trip stop device, said arm beingadjustable to a plurality of different predetermined conditions for ocrating the trip stop earlier or later to suit tlie records of differentdiameters and having means whereby said adjustment is arrested at .saidpredetermined points, substantially as described.

2. In combination with the trip stop device, an arm attached to the armof the horn andhaving means whereby its contacting end may be widened or narrowed to predetermined degrees to strike the trip stop deviceearlier or later, said means being thrown at once from one position tothe other and there arrested substantially as described.

3. In combination with the trip stop device, an arm attached to the armof the horn having a spring member 10 attached thereto -to contact withthe trip stop device and a pivoted finger piece to adjust the springmember 10 towards or from the side of the arm on the horn, substantiallyas described. In testimony whereof, I affix my signature in presence oftwo witnesses.

JUNIUS WALLACE JONES. .Witnesses:

H. R. STRAUBE, L. G. STIRLING.

